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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>

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<script>
    // var a=prompt("请输入一个整数")
    // var b=prompt("再输入一个整数")
    // var c=Number(a)
    // var d=Number(b)
    // alert(c+d)
    var a='8.8'
    console.log(a/2);
    console.log(Number(a))
    console.log(parseInt(a));
    console.log(parseFloat(a));
    var b=8.5
    console.log()
    
    
</script>